Results 11 to 20 of about 1,512,339 (290)
Reconfigurable wideband patch antenna for cognitive radio [PDF]
, 2009 Cognitive radio communication is envisaged to be a new paradigm of methodologies for enhancing the performance of radio communication systems through the efficient utilization of radio spectrum.
AbuTarboush, HF +14 more
core +8 more sources
Diffraction modelling of mobile radio wave propagation in built-up areas [PDF]
, 1991 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis examines theoretical methods of modelling radio wave propagation in built-up areas, with particular application to mobile radio systems ...
Saunders, Simon Reza
core +7 more sources
The Qujing incoherent scatter radar: system description and preliminary measurements
Earth, Planets and Space, 2018 The Qujing incoherent scatter radar (QJISR), the first one in China with the geographic location (25.6°N, 103.8°E), was brought into operation since the spring of 2014.
ZongHua Ding +4 more
doaj +1 more source
PAINLEV´E TEST OF A MAGNETOHYDRODYNAMICS SYSTEM [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2015 One approximation of magnetohydrodynamics equations, which describe the cosmic object’s magnetic field, is considered. The analytic properties of a nonlinear system are investigated by Painlev´e test.
G.M. Vodinchar +2 more
doaj +1 more source
Propagation measurements to support third generation mobile radio network planning [PDF]
, 1993 The features of the radio network planning tool proposed by the European RACE Advanced Cell Planning Methods and Tools for Third Generation Mobile Radio Systems (PLATON) project are described.
J.C.S. Cheung +5 more
core +1 more source
Leida xuebao, 2013 Clutter rejection is a key technique used by passive radars for target detection. Especially when using Single Frequency Network (SFN) configuration, the multipath clutter and ground clutter increase several times more than during a single illuminator ...
Yi Jian-xin +4 more
doaj +1 more source
Overview of processing and analysis methods for pulse geophysical signals [PDF]
E3S Web of Conferences, 2020 The paper discusses the processing and analysis methods for the geoacoustic and electromagnetic emission pulse signals recorded for more than 20 years at the IKIR FEB RAS geodynamic proving ground (Kamchatka Peninsula).
Lukovenkova Olga +3 more
doaj +1 more source
Results of atmospheric-lithospheric observations of acoustic radiation in Kamchatka [PDF]
E3S Web of Conferences, 2019 Simultaneous atomspheric-lithospheric acoustic observations have been carried out during autumn-spring periods of 2017-2019 in Kamchatka at “Karymshina” observation site located in the zone of different-rank tectonic faults.
Larionov Igor +2 more
doaj +1 more source
Estimation earthquake occurrence probability in Kamchatka region based on seismological and complex of ionospheric precursors [PDF]
EPJ Web of Conferences, 2021 In this paper the authors present the method of estimation of a region, waiting period and probability of strong earthquakes with KS ≥ 13.5 (M ≥ 6.0) in Kamchatka region based on the combination of mid-term and short-term predictive signs accompanying ...
Boganov Vadim, Pavlov Aleksey
doaj +1 more source
Operative center of the geophysical prognosis in Izmiran [PDF]
Annales Geophysicae, 2005 IZMIRAN was founded about 65 years ago with one of the goals of carrying out geomagnetic prognoses. More or less, this activity has been developed during its entire history, but about 6 years ago this aim became sufficiently feasible due to the ...
A. V. Belov +5 more
doaj +1 more source